如何計算反應時間？

我開發了一個應用程序，它有兩個按鈕（左和右）和一個文本視圖，可以在屏幕上彈出。每個按鈕都有相應的單詞。
用戶必須在顯示時儘快單擊與TextView單詞對應的按鈕。我想通過點擊按鈕來計算它的反應時間。如何計算反應時間？

以下是我的代碼。

public class Place_to_go_1 extends AppCompatActivity { 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_place_to_go_1); 

     placeone = Global_variables.getFirst_choice_label(); 
     placetwo = Global_variables.getSecond_choice_label(); 
     p_one = (TextView)findViewById(R.id.p_one); 
     p_two = (TextView)findViewById(R.id.p_two); 

     btnleft = (ImageButton)findViewById(R.id.btnleft); 
     btnright = (ImageButton)findViewById(R.id.btnright); 

     next = (ImageButton)findViewById(R.id.Next); 
     lblmaintext = (TextView)findViewById(R.id.lblmaintext); 
     lblprompt = (TextView)findViewById(R.id.lblprompt); 
     lblreact = (TextView)findViewById(R.id.lblreact); 
     imgmain = (ImageView)findViewById(R.id.imgmain); 
     //prac = (ImageView) findViewById(R.id.prac); 

     Intent intent = getIntent(); 
     final String randomId = intent.getStringExtra("Info_id"); 

     //============ validate image if not empty 
     setImage_onLaunch(); 

     //==== populate left and right choices=== 
     populate_headers(placeone, placetwo); 
     //==== populate attributes===== 
     populate_attributes(); 

     //============== instruction ====== 
     setInstruction(); 

     //=============media 
     wrong_press = MediaPlayer.create(this, R.raw.wrong_press); 
     react_fast = MediaPlayer.create(this, R.raw.react_faster); 

     //=== left button click trigger 
     btnleft.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 

       String position = "H"; 
        if (tanan[counter].equals(p_one.getText().toString())) { 

         lblprompt.setVisibility(View.INVISIBLE); 

         HashMap<String,String> queryValues = new HashMap<String, String>(); 
         queryValues.put("Info_id",randomId); 
         queryValues.put("Choice",p_one.getText().toString()); 
         queryValues.put("Reaction_time",String.valueOf(elapsedTime)); 
         queryValues.put("Position",position); 
         queryValues.put("Main",main); 
         queryValues.put("Error",error); 
         mydb.insertTest(queryValues); 


         counter++; 
         if (counter < tanan.length) { 
          btnleft.setEnabled(false); 
          btnright.setEnabled(false); 
          timeStamp = System.currentTimeMillis(); 
          //Toast.makeText(Place_to_go_1.this, ""+timeStamp, Toast.LENGTH_SHORT).show(); 
          getreactionTime(p_one.getText().toString(), String.valueOf((((timeStamp)/1000.0) - ((timeRun)/1000.0)))); 
          setIntervalTime(); 

         } else { 
          //======end sa data 

          postEnd(); 
         } 
        } else { 
         // Toast.makeText(Place_to_go_1.this, "Wrong pressed", Toast.LENGTH_SHORT).show(); 
         //wrong_press.start(); 
         wrong_click_audio(); 
         error = "1"; 
         lblprompt.setVisibility(View.VISIBLE); 
        } 


      } 
     }); 
     //==== right button click trigger 
     btnright.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 

       String position = "A"; 

        if (tanan[counter].equals(p_two.getText().toString())) { 

         lblprompt.setVisibility(View.INVISIBLE); 



         HashMap<String,String> queryValues = new HashMap<String, String>(); 
         queryValues.put("Info_id",randomId); 
         queryValues.put("Choice",p_two.getText().toString()); 
         queryValues.put("Reaction_time", String.valueOf(elapsedTime)); 
         queryValues.put("Position",position); 
         queryValues.put("Main",main); 
         queryValues.put("Error",error); 
         mydb.insertTest(queryValues); 



         counter++; 
         if (counter < tanan.length) { 
          btnleft.setEnabled(false); 
          btnright.setEnabled(false); 
          timeStamp = System.currentTimeMillis(); 
          //Toast.makeText(Place_to_go_1.this, ""+timeStamp, Toast.LENGTH_SHORT).show(); 
          getreactionTime(p_two.getText().toString(), String.valueOf((((timeStamp)/1000.0) - ((timeRun)/1000.0)))); 
          setIntervalTime(); 
         } else { 


          //======end sa data 
          postEnd(); 
         } 
        } else { 
         // Toast.makeText(Place_to_go_1.this, "Wrong pressed", Toast.LENGTH_SHORT).show(); 
         // wrong_press.start(); 
         wrong_click_audio(); 
         error = "1"; 

         lblprompt.setVisibility(View.VISIBLE); 
        } 
       } 



     }); 


     // ==== next button for the next activity (Place to go 2) 
     next.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 

       Intent intent = getIntent(); 
       String randomId = intent.getStringExtra("Info_id"); 


       //============= launch activity 2 for place to go 
        if (instruct == true) { 
         next.setVisibility(View.INVISIBLE); 
         // prac.setVisibility(View.VISIBLE); 
         CountDownTimer(); 

          } else { 
           //Toast.makeText(getApplication(),"Saved Successfully.",Toast.LENGTH_SHORT).show(); 
           Intent i = new Intent(getApplicationContext(), Place_to_go_2.class); 
           i.putExtra("Info_id", randomId); 
           startActivity(i); 


        } 

      } 
     }); 


    } 



public void interval(){ 
     if(counter < tanan.length){ 
     lblmaintext.setVisibility(View.VISIBLE); 
     timeRun = System.currentTimeMillis(); 
     btnleft.setEnabled(true); 
     btnright.setEnabled(true); 
     lblmaintext.setText(tanan[counter]); 
     setImage(); 
     imgmain.setVisibility(View.VISIBLE); 

     react = true; 
     reacFaster(); 
     }else{ 
     //======end sa data 
     Toast.makeText(Place_to_go_1.this, "End data", Toast.LENGTH_SHORT).show(); 
     lblmaintext.setVisibility(View.VISIBLE); 
     lblmaintext.setText("Ok for now"); 
     } 


     } 

public void setIntervalTime(){ 
     react = false; 
     lblreact.setVisibility(View.INVISIBLE); 
     reactFaster_timer.cancel(); 
     lblmaintext.setVisibility(View.INVISIBLE); 
     lblreact.setVisibility(View.INVISIBLE); 
     imgmain.setVisibility(View.INVISIBLE); 

     timer = new CountDownTimer(Global_variables.interval_time_before_choices_will_show,Global_variables.interval_time_before_choices_will_show) { 
@Override 
public void onTick(long millisUntilFinished) { 

     } 

@Override 
public void onFinish() { 
     interval(); 
     } 
     }.start(); 
     } 
     int counter_countdown = 0; 
     int drawwable_amber = R.drawable.amber; 
     String arr[] = {"Ready...","Set...","Start."}; 
public void CountDownTimer(){ 

     btnleft.setVisibility(View.INVISIBLE); 
     btnright.setVisibility(View.INVISIBLE); 
     lblmaintext.setBackgroundResource(0); 

     timer = new CountDownTimer(4000,1000) { 
@Override 
public void onTick(long millisUntilFinished) { 
     lblmaintext.setTextSize(35); 

     lblmaintext.setText(arr[counter_countdown]); 
     counter_countdown++; 
     } 

@Override 
public void onFinish() { 
     btnleft.setVisibility(View.VISIBLE); 
     btnright.setVisibility(View.VISIBLE); 
     lblmaintext.setBackgroundResource(drawwable_amber); 
     // lblmaintext.setText(tanan[counter]); 
     //setImage(); 
     val_first_launch(); 
     timeRun = System.currentTimeMillis(); 

     react = true; 
     reacFaster(); 

     } 
     }.start(); 
     } 


public void reacFaster(){ 
     reactFaster_timer = new CountDownTimer(Global_variables.reaction_time_first_param,Global_variables.reaction_time_second_param) { 
@Override 
public void onTick(long millisUntilFinished) { 

     } 

@Override 
public void onFinish() { 
     if(react == true){ 
     //Toast.makeText(Place_to_go_1.this, "please react faster", Toast.LENGTH_SHORT).show(); 
     react_fast.start(); 
     lblreact.setVisibility(View.VISIBLE); 
     } 
     } 
     }.start(); 
     } 



public void populate_headers(String one,String two){ 
     //== this methos sets headers as random==// 
     headers = new ArrayList<String>(); 
     headers.add(one); 
     headers.add(two); 
     Collections.shuffle(headers); 
     p_one.setText(headers.get(0)); 
     p_two.setText(headers.get(1)); 
     } 
public void populate_attributes(){ 
     attributes = new ArrayList<String>(); 
     for(int h =0;h < 5;h++){ 
     attributes.add(placeone); 
     attributes.add(placetwo); 
     } 
     Collections.shuffle(attributes); 
     tanan = new String[attributes.size()]; 
     for(int k = 0; k < tanan.length;k++){ 
     tanan[k] = attributes.get(k); 
     } 
     } 

public void postEnd(){ 
     instruct = false; 
     lblprompt.setVisibility(View.INVISIBLE); 
     btnright.setVisibility(View.INVISIBLE); 
     btnleft.setVisibility(View.INVISIBLE); 
     next.setVisibility(View.VISIBLE); 
     lblmaintext.setBackgroundResource(0); 
     lblmaintext.setTextSize(20); 
     p_one.setVisibility(View.INVISIBLE); 
     p_two.setVisibility(View.INVISIBLE); 

     imgmain.setVisibility(View.INVISIBLE); 

     reactFaster_timer.cancel(); 
     lblreact.setVisibility(View.INVISIBLE); 
     lblmaintext.setText("Well done!\nNext, is the main task. It is exactly the same as before but this time words will appear on the screen that might distract you. \nPlease respond as quickly as you can.\n Press Next to begin"); 
     } 



//=========== validate if image is enabled/ disble if not set 
public void setImage_onLaunch(){ 
     if(Global_variables.getFirst_choice_image().equals("") || Global_variables.getSecond_choice_image().equals("")){ 
     disbaleImage(); 
     }else{ 

     } 
     } 

    public void setImage(){ 
     /* if(tanan[counter].equals(p_one.getText().toString())){ 
      imgmain.setImageBitmap(BitmapFactory.decodeFile(Global_variables.getFirst_choice_image())); 
     }else{ 
      imgmain.setImageBitmap(BitmapFactory.decodeFile(Global_variables.getSecond_choice_image())); 
     }*/ 
     if(placeone.equals(tanan[counter])){ 
      imgmain.setImageBitmap(BitmapFactory.decodeFile(Global_variables.getFirst_choice_image())); 
     }else{ 
      imgmain.setImageBitmap(BitmapFactory.decodeFile(Global_variables.getSecond_choice_image())); 
     } 
    } 


    public void val_first_launch(){ 
     if(Global_variables.getFirst_choice_image().equals("") || Global_variables.getSecond_choice_image().equals("")){ 
      lblmaintext.setVisibility(View.VISIBLE); 
      lblmaintext.setText(tanan[counter]); 
     }else{ 
      imgmain.setVisibility(View.VISIBLE); 
      if(placeone.equals(tanan[counter])){ 
       imgmain.setImageBitmap(BitmapFactory.decodeFile(Global_variables.getFirst_choice_image())); 
      }else{ 
       imgmain.setImageBitmap(BitmapFactory.decodeFile(Global_variables.getSecond_choice_image())); 
      } 
     } 
    } 


    public void disbaleImage(){ 
     imgmain.setBackgroundResource(0); 
     imgmain.setVisibility(View.GONE); 
    } 

    @Override 
    public void onBackPressed() { 
     super.onBackPressed(); 

     startActivity(new Intent(getApplication(), MainActivity.class)); 
     finish(); 

    } 


    public String getreactionTime(String domain, String time){ 
     // Toast.makeText(Place_to_go_1.this, time, Toast.LENGTH_SHORT).show(); 
     //== get reaction time to every activity 
     Global_variables.set_timeStamps(domain, time); 
     return domain; 
    } 


    //===== prompt instruction==== 
    public void setInstruction(){ 
     btnleft.setVisibility(View.INVISIBLE); 
     btnright.setVisibility(View.INVISIBLE); 
     lblmaintext.setBackgroundResource(0); 
     lblmaintext.setTextSize(20); 
     lblmaintext.setText("Instruction:\n\nIf " + p_one.getText().toString() + " appears, press arrow left.\n If " + p_two.getText().toString() + 
       " appears, press arrow right.\n\nRespond as quickly as you can."); 
     next.setVisibility(View.VISIBLE); 
    } 
    //===== prompt instruction==== 


    public void wrong_click_audio(){ 

     wrong_press.start(); 


    } 

    //=============end class==================== 

    public void onConfigurationChanged(Configuration newConfig) { 
     super.onConfigurationChanged(newConfig); 

     // Checks the orientation of the screen 
     if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) { 
      // Toast.makeText(this, "landscape", Toast.LENGTH_SHORT).show(); 
     } else if (newConfig.orientation == Configuration.ORIENTATION_PORTRAIT) { 
      //Toast.makeText(this, "portrait", Toast.LENGTH_SHORT).show(); 
     } 
    } 
}

來源

2016-09-30 Crissy

感謝您傾銷所有代碼。試試向我們展示您試過的東西 –

這個想法是計算兩個時間點之間的差異。我會寫計算時間差的Java /測量反應時間在Java中的2個例子：

System.nanoTime（）或System.currentTimeMillis的（）

的差異這裏討論：Time measuring overhead in Java

long endTimeNanoSec = 0; 
long startTimeNanoSec = System.nanoTime(); 
myWorkThatNeedsTiming(); // wait for user button press here 
endTimeNanoSec = System.nanoTime(); 

long totalWorkTimeNanos = endTimeNanoSec - startTimeNanoSec;

爪哇秒錶

的JavaDoc：StopWatch

Stopwatch stopwatch = Stopwatch.createStarted(); 
myWorkThatNeedsTiming(); // wait for user button press here 
stopwatch.stop(); 

long totalWorkTimeMillis = stopwatch.elapsedMillis();

來源

2016-09-30 05:46:07

謝謝。你能幫我在哪裏把代碼on.please ..我只是新的Android。 :) – Crissy

在你的代碼中你有一個getreactionTime（...）方法。祝您在Android冒險中幸運！ :) –

好的。多虧了你:) – Crissy

這應有助於：

嘗試使用的onTouch代替onClick。

timeReaction是您想要的值。

來源

2016-09-30 05:50:07 Talha

這裏計算反應時間的一個簡單邏輯是創建一個變量，用於保存向用戶彈出問題的時間，以及用戶顯示點擊反應的時間以提問並計算這兩個動作之間的時間差。

long timeWhenQuestionShowed = System.currentTimeMillis(); 
long timeWhenUserReacted = System.currentTimeMillis(); 
long reactionTime = timeWhenQuestionShowed - timeWhenUserReacted;

來源

2016-09-30 05:50:49

這樣的答案不會滿足所需的條件，因爲你正在按順序執行兩行，沒有任何點擊檢查按鈕。 – Talha

它是一個邏輯我現在提出它直到你找出事件發生時間和計算時差。在堆棧中，我不認爲只是放棄特定於某種情況的所有代碼是有效的方式來學習 –

這就是這個問題，不是嗎？ – Talha

如何計算反應時間？

回答

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